Surface phenomena of HA/TiN coatings on the nanotubular-structured beta Ti–29Nb–5Zr alloy for biomaterials
Surface phenomena of HA/TiN coatings on the nanotubular-structured beta Ti–29Nb–5Zr alloy for biomaterials
复制标题
DOI：
10.1016/j.apsusc.2011.04.051
复制
发表时间：
2012
影响因子：
6.7
通讯作者：
Eun-Ju Kim;Y. Jeong;H. Choe;W. Brantley
中科院分区：
文献类型：
--
作者：
Eun-Ju Kim;Y. Jeong;H. Choe;W. Brantley
用多种实验方法研究了生物材料用纳米管结构的β-Ti-29Nb-5Zr合金表面HA/TiN涂层的表面现象。在1MH3PO4电解液中，加入1.0wt.%NaF，在室温下对Ti-29Nb-5Zr合金进行了阳极氧化，形成了纳米管结构。采用磁控溅射技术在Ti-29Nb-5Zr合金试件上沉积了羟基磷灰石/氮化钛薄膜。以人牙灰为原料，在1300℃下烧结1h制成HA靶材，其平均钙磷比为1.9。在TiN缓冲层涂层的初始沉积过程中，用纯HA靶材在Ti-29Nb-5Zr合金上进行了HA/TiN沉积。用FE-SEM、EDX、X射线衍射仪和XPS对涂层合金的微观组织和纳米管形貌进行了分析。Ti-29Nb-5Zr合金基材晶粒细小，沿拉伸方向择优取向。HA/TiN涂层稳定，纳米管尖端形貌均匀。
Surface phenomena of HA/TiN coatings on the nanotubular-structured beta Ti–29Nb–5Zr alloy for biomaterials have been investigated by several experimental methods. The nanotubular structure was formed by anodizing the Ti–29Nb–5Zr alloy in 1M H3PO4electrolytes with 1.0wt.% NaF at room temperature. Hydroxyapatite (HA)/titanium nitride (TiN) films were deposited on Ti–29Nb–5Zr alloy specimens using a magnetron sputtering system. The HA target was made of human tooth-ash by sintering at 1300°C for 1h, and the HA target had an average Ca/P ratio of 1.9. The HA/TiN depositions were performed, using the pure HA target, on Ti–29Nb–5Zr alloy following the initial deposition of a TiN buffer layer coating. Microstructures and nanotubular morphology of the coated alloy specimens were examined by FE-SEM, EDX, XRD, and XPS. The Ti–29Nb–5Zr alloy substrate had small grain size and preferred orientation along the drawing direction. The HA/TiN coating was stable with a uniform morphology at the tips of the nanotubes.